I'm trying to find where the base settings are for the export of stl files with the parameters shown.
The problem you will have is that the settings may have to be altered depending on the size of the object, in theory the best one may be surface tolerance, but its faulty on my machine with v2016 in that it gets over-ridden by any normal tolerance settings (which doesn't happen in v19)
With normal tolerance and edge length they would need to be calculated depending on the size of the object as you would get different results on a 8 mm cylinder than a 150mm cylinder.
As Jeff says, have a play, instead of calculation, one could draw a circle the size of the object, draw a horizontal line 0.001 long (chord height) from a quadrant point heading towards the centre of the circle - angle would be 0 or 180 depending on which quadrant point, draw a vertical line and put it on the inside vertex of the first line, trim it to the circle to create a chord, read its length in selection properties, and use this for edge length, - you could also get the angle for Normal tolerance from this chord (by measuring its angle in relation to the centre of the circle).
Which ever way things will only be approximate.